| |
 |
|
Class Information
Number: 315/291
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation
Description: Systems which include means to regulate the current and/or voltage supplied to the load device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7259523 |
Circuit arrangement |
Aug. 21, 2007 |
| 7259519 |
Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps |
Aug. 21, 2007 |
| 7256689 |
Flashing device for vehicle |
Aug. 14, 2007 |
| 7256556 |
Equipment and methods for emergency lighting that provides brownout detection and protection |
Aug. 14, 2007 |
| 7256555 |
Backlight driving method |
Aug. 14, 2007 |
| 7256554 |
LED power control methods and apparatus |
Aug. 14, 2007 |
| 7253812 |
El display driver and El display |
Aug. 7, 2007 |
| 7253569 |
Open lamp detection in an EEFL backlight system |
Aug. 7, 2007 |
| 7253568 |
High pressure discharge lamp lighting apparatus |
Aug. 7, 2007 |
| 7253567 |
Low-visual noise, jitterized pulse width modulation brightness control circuit |
Aug. 7, 2007 |
| 7253566 |
Methods and apparatus for controlling devices in a networked lighting system |
Aug. 7, 2007 |
| 7253565 |
Apparatus for supplying power, backlight assembly and liquid crystal display apparatus having the same |
Aug. 7, 2007 |
| 7253564 |
Lamp current balancing device |
Aug. 7, 2007 |
| 7250810 |
Multi-mode charge pump drive circuit with improved input noise at a moment of mode change |
Jul. 31, 2007 |
| 7250806 |
Apparatus and method for generating an output signal that tracks the temperature coefficient of a light source |
Jul. 31, 2007 |
| 7250732 |
High pressure discharge lamp control system and method |
Jul. 31, 2007 |
| 7248002 |
Light emission control apparatus and light emission control method with temperature-sensitive driving current control |
Jul. 24, 2007 |
| 7248000 |
Operating device and method for operating gas discharge lamps |
Jul. 24, 2007 |
| 7247999 |
Dimmer for use with a three-way switch |
Jul. 24, 2007 |
| 7247998 |
Transient detection of end of lamp life condition apparatus and method |
Jul. 24, 2007 |
| 7247997 |
Electroluminescent lamp driving circuit and method |
Jul. 24, 2007 |
| 7247996 |
Projector |
Jul. 24, 2007 |
| 7247991 |
Dimming ballast and method |
Jul. 24, 2007 |
| 7245228 |
Portable electronic apparatus with controlled light sources |
Jul. 17, 2007 |
| 7245224 |
Methods and systems for diagnosing projection device failure |
Jul. 17, 2007 |
| 7245091 |
Inverter capable of switching working frequency |
Jul. 17, 2007 |
| 7245090 |
Switching LED driver with temperature compensation to program LED current |
Jul. 17, 2007 |
| 7245089 |
Switching LED driver |
Jul. 17, 2007 |
| 7245088 |
Power control circuit for controlling rated power supplied to a load |
Jul. 17, 2007 |
| 7245086 |
Lamp operating circuit and operating method for a lamp having active current measurement |
Jul. 17, 2007 |
| 7242155 |
Discharge lamp driving circuit |
Jul. 10, 2007 |
| 7242154 |
Circuit arrangement and method for operation of lamps |
Jul. 10, 2007 |
| 7242153 |
Pulse width modulation inverter circuit and control method thereof |
Jul. 10, 2007 |
| 7242152 |
Systems and methods of controlling light systems |
Jul. 10, 2007 |
| 7239094 |
Electronic ballast with adaptive lamp preheat and ignition |
Jul. 3, 2007 |
| 7239093 |
System and method for controlling luminance of an LED lamp |
Jul. 3, 2007 |
| 7239089 |
Power supply apparatus for high pressure discharge lamp |
Jul. 3, 2007 |
| 7239087 |
Method and apparatus to drive LED arrays using time sharing technique |
Jul. 3, 2007 |
| 7236375 |
DC/AC converter and its controller IC |
Jun. 26, 2007 |
| 7236155 |
Backlight driving circuit |
Jun. 26, 2007 |
| 7235933 |
Reversible dimmer device of gas discharge lamps and the control method for light adjusting thereof |
Jun. 26, 2007 |
| 7235932 |
High efficiency ballast for gas discharge lamps |
Jun. 26, 2007 |
| 7233116 |
Method for stabilizing brightness of a cold cathode fluorescent lamp and related apparatus |
Jun. 19, 2007 |
| 7233115 |
LED-based lighting network power control methods and apparatus |
Jun. 19, 2007 |
| 7230613 |
Display driver supporting a dimming mode |
Jun. 12, 2007 |
| 7230388 |
Lighting of discharge lamp by frequency control |
Jun. 12, 2007 |
| 7230387 |
Electroluminescent device including a programmable pattern generator |
Jun. 12, 2007 |
| 7227317 |
Method and system for enhanced dimming resolution in a light ballast through use of multiple control frequencies |
Jun. 5, 2007 |
| 7224130 |
Method of operating a lamp containing a fixed phase power controller |
May. 29, 2007 |
| 7224129 |
Discharge lamp drive apparatus and liquid crystal display apparatus |
May. 29, 2007 |
|
|
|
